– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Wed 07 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 07 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryModerate rain (total 12mm), heaviest on Fri morning. Warm (max 20°C on Thu afternoon, min 6°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 18mm), heaviest on Tue afternoon. Very mild (max 14°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light. | |||||||||||||||
Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | | |  | | | | | | | |  | |
clear | clear | clear | rain shwrs | rain shwrs | rain shwrs | rain shwrs | light rain | rain shwrs | clear | clear | clear | clear | clear | clear | some clouds | |
Cloud base (m) | 8100 | 8500 | 9400 | 750 | 550 | 650 | 700 | 600 | 800 | 9450 | 2850 | |||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | 0.8 | 7 | 2 | 1.3 | 0.3 | 0.7 | — | — | — | — | — | — | — |
max °C | 16 | 19 | 20 | 14 | 11 | 9 | 7 | 7 | 10 | 7 | 10 | 12 | 8 | 12 | 14 | 11 |
min °C | 16 | 16 | 18 | 12 | 10 | 8 | 6 | 6 | 9 | 5 | 6 | 11 | 7 | 7 | 13 | 11 |
chill °C | 16 | 16 | 18 | 12 | 9 | 7 | 6 | 5 | 8 | 4 | 5 | 11 | 7 | 7 | 13 | 11 |
Freezing level m | 3900 | 3800 | 3700 | 2900 | 2000 | 1650 | 1450 | 1500 | 1850 | 1900 | 1900 | 2300 | 3250 | 3700 | 3400 | 3200 |
 | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — |
 | — | — | 6:32 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — | — | 6:24 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 12mm), heaviest on Fri morning. Warm (max 20°C on Thu afternoon, min 6°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 18mm), heaviest on Tue afternoon. Very mild (max 14°C on Mon afternoon, min 5°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.